Mark Clare was Group Chief Executive from October 2006 to June 2015. In March 2015, Mark announced his intention to step down after nine years to develop his non-executive career.
David Thomas, formerly the Group Finance Director, succeeded Mark as Group Chief Executive on 1 July 2015. Mark remains an Executive Board Director until 31 July 2015 and remains with the Group until October 2015, to ensure an orderly handover.
Mark was a panel member of the Lyons Housing Review, an independent review carried out in 2014 by Sir Michael Lyons for Labour's Policy Review. He is also a member of the Government’s Construction Leadership Council, is a Trustee of the BRE Trust and of the UK Green Building Council. He also sits on the CBI Construction Council.
Previously Managing Director of Centrica's British Gas Residential Energy operation, Mark joined British Gas in 1994, becoming Centrica's Finance Director in 1997 and Managing Director of British Gas Residential Energy in 2002. He was a Non-Executive Director of BAA plc from 2001 until it was taken over in 2006.
He joined the Board of United Utilities Group PLC in November 2013 as a Non-Executive Director and became the Senior Independent Director on 25th July 2014.